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