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