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