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