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