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