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