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