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