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