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