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