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