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