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