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