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)(24,30)(29,43)(31,38)(32,40)(33,41)(34,39)(35,42)(37,45)(44,47)(46,48)(9,11)(10,13)(12,16)(14,15)(17,19,22,30,23,31,21,34)(18,24,26,28,27,39,36,38)(20,29,32,45,33,46,35,44)(25,37,42,43,41,47,40,48)(1,3,4,8)(2,5,6,7)(11,16)(13,14)(17,20)(18,25)(19,29)(21,35)(22,32)(23,33)(24,37)(26,42)(27,41)(28,43)(30,45)(31,46)(34,44)(36,40)(38,48)(39,47)(9,11)(10,14)(12,16)(13,15)(17,21,23,22)(18,26,27,36)(19,30,31,34)(20,32,33,35)(24,38,39,28)(25,40,41,42)(29,44,46,45)(37,43,47,48)(11,16)(13,14)(19,31)(20,33)(24,39)(25,41)(28,38)(30,34)(32,35)(40,42) 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.