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