One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,11)(5,8)(7,12)(9,13)(10,16)(14,15)(17,18,22,28)(19,26,30,23)(20,25,31,24)(21,29,32,27)(33,34)(35,40)(36,44)(37,38)(39,43)(41,47)(42,48)(45,46)(3,9)(6,13)(10,15)(14,16)(17,19)(18,23)(20,29)(21,25)(22,30)(24,32)(26,28)(27,31)(33,35)(34,40)(36,37)(38,44)(39,45)(41,48)(42,47)(43,46) involution — undirected(1,2,5,8)(3,6,9,13)(4,7,12,11)(10,14,15,16)(17,20,22,31)(18,24,28,25)(19,29,30,27)(21,23,32,26)(33,36,39,47)(34,41,43,44)(35,42,45,37)(38,46,48,40)(1,2)(3,6)(4,7)(5,8)(9,13)(10,14)(11,12)(15,16)(17,20)(18,25)(19,29)(21,23)(22,31)(24,28)(26,32)(27,30)(33,36)(34,41)(35,37)(38,46)(39,47)(40,48)(42,45)(43,44) involution — undirected(1,3)(2,6)(4,10)(5,9)(7,14)(8,13)(11,16)(12,15)(17,19)(18,26)(20,29)(21,24)(22,30)(23,28)(25,32)(27,31)(33,37)(34,38)(35,36)(39,42)(40,44)(41,46)(43,48)(45,47) involution — undirected(1,4)(2,7)(3,10)(5,12)(6,14)(8,11)(9,15)(13,16)(17,21,22,32)(18,27,28,29)(19,25,30,24)(20,23,31,26)(33,38)(34,42)(35,44)(36,46)(37,43)(39,48)(40,47)(41,45)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.