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