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