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