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