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