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)(19,29)(20,33)(21,37)(22,39)(23,26)(24,32)(25,35)(27,38)(28,30)(31,45)(34,43)(36,42)(40,48)(41,46)(44,47)(1,3)(2,5)(4,7)(6,8)(9,10)(11,13)(12,14)(15,16)(17,19,30,38,23,21,22,32)(18,24,39,37,26,27,28,29)(20,34,44,46,35,31,36,48)(25,41,47,43,33,40,42,45)(2,6)(3,7)(9,11,12,15)(10,13,14,16)(17,20,23,35)(18,25,26,33)(19,31,21,34)(22,36,30,44)(24,40,27,41)(28,42,39,47)(29,43,37,45)(32,46,38,48)(2,6)(5,8)(10,14)(13,16)(18,26)(19,21)(20,35)(28,39)(32,38)(36,44)(40,41)(43,45) involution — undirected(17,21,22,38,23,19,30,32)(18,27,28,37,26,24,39,29)(20,34,36,48,35,31,44,46)(25,41,42,45,33,40,47,43)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.