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