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