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