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)(19,28)(20,25)(21,26)(22,36)(23,27)(24,30)(29,43)(31,38)(32,40)(33,41)(34,39)(35,42)(37,46)(44,48)(45,47)(1,3,5,4)(2,6,8,7)(9,11)(10,13)(12,15)(14,16)(20,32)(25,40)(29,44)(33,35)(37,47)(41,42)(43,48)(45,46)(1,3,5,4)(2,7,8,6)(11,15)(13,16)(17,19,22,30,23,31,21,34)(18,24,26,28,27,39,36,38)(20,29,33,46,32,44,35,45)(25,37,42,43,40,47,41,48)(1,4,5,3)(2,6,8,7)(11,15)(13,16)(17,20)(18,25)(19,29)(21,35)(22,33)(23,32)(24,37)(26,42)(27,40)(28,43)(30,46)(31,44)(34,45)(36,41)(38,48)(39,47)(17,21,23,22)(18,26,27,36)(19,30,31,34)(20,33,32,35)(24,38,39,28)(25,41,40,42)(29,45,44,46)(37,43,47,48)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.