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