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