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