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