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