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