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