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