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