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)(17,18,23,28)(19,24,32,41)(20,25,21,26)(22,27,37,46)(29,38,34,43)(30,39,47,48)(31,40,36,45)(33,42,35,44)(1,3,5,4)(2,6,7,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,29)(21,34)(22,36)(23,32)(25,38)(26,43)(27,45)(28,41)(30,35)(31,37)(33,47)(39,44)(40,46)(42,48)(1,4,5,3)(2,6,7,8)(10,13)(14,16)(17,20)(18,25)(19,29)(21,23)(22,33)(24,38)(26,28)(27,42)(30,31)(32,34)(35,37)(36,47)(39,40)(41,43)(44,46)(45,48)(10,13)(14,16)(17,21,23,20)(18,26,28,25)(19,30,32,47)(22,33,37,35)(24,39,41,48)(27,42,46,44)(29,36,34,31)(38,45,43,40)(2,7)(6,8)(9,11,12,15)(10,14,13,16)(20,21)(25,26)(29,34)(30,47)(33,35)(38,43)(39,48)(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.