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