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