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