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