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