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