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