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