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