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