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