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