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