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