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