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