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