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