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