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