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