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