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