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