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