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