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