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