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