One vertex per element, one color per generator, with an edge from x to x·s.
(18,23)(19,27)(25,29)(26,31)(33,34)(35,40)(36,46)(37,38)(39,41)(42,44)(43,47)(45,48) involution — undirected(1,2)(3,9)(4,12)(5,6)(7,11)(8,13)(10,15)(14,16)(17,18,22,23)(19,28,27,24)(20,29,30,25)(21,26,32,31)(33,35)(34,40)(36,43)(37,42)(38,44)(39,45)(41,48)(46,47)(2,6)(4,13)(7,9)(10,14)(20,30)(21,32)(25,29)(26,31)(33,36,39,37)(34,38,41,46)(35,42,45,43)(40,47,48,44)(1,3)(2,7)(4,14)(5,11)(6,9)(8,16)(10,13)(12,15)(17,19,22,27)(18,24,23,28)(20,31,30,26)(21,29,32,25)(33,37,39,36)(34,38,41,46)(35,43,45,42)(40,47,48,44)(1,4)(2,8)(3,10)(5,13)(6,12)(7,15)(9,16)(11,14)(17,20)(18,25)(19,26)(21,28)(22,30)(23,29)(24,32)(27,31)(33,35)(34,40)(36,43)(37,42)(38,44)(39,45)(41,48)(46,47) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,11)(10,15)(12,13)(14,16)(17,21,22,32)(18,26,23,31)(19,29,27,25)(20,28,30,24)(33,38)(34,36)(35,44)(37,41)(39,46)(40,43)(42,48)(45,47)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.