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