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