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)(19,22)(20,25)(21,24)(23,28)(26,29)(27,31)(30,32)(33,34,40,38)(35,45,47,41)(36,43,37,42)(39,44,48,46)(1,2)(3,6)(4,7)(5,8)(9,11)(10,14)(12,13)(15,16)(18,19)(23,25)(24,26)(30,31)(33,35,40,47)(34,41,38,45)(36,46,37,44)(39,43,48,42)(17,18,22,19)(20,23,28,25)(21,24,29,26)(27,30,32,31)(33,36,40,37)(34,42,38,43)(35,46,47,44)(39,45,48,41)(1,2)(3,6)(4,12)(5,8)(7,13)(9,11)(10,15)(14,16)(17,19,22,18)(20,25,28,23)(21,26,29,24)(27,31,32,30)(33,37,40,36)(34,43,38,42)(35,46,47,44)(39,45,48,41)(1,3,5,11)(2,6,8,9)(4,10,13,16)(7,14,12,15)(17,20)(18,23)(19,25)(21,27)(22,28)(24,30)(26,31)(29,32)(33,38,40,34)(35,45,47,41)(36,43,37,42)(39,46,48,44)(1,4,5,13)(2,7,8,12)(3,10,11,16)(6,14,9,15)(17,21,22,29)(18,24,19,26)(20,27,28,32)(23,30,25,31)(33,39,40,48)(34,44,38,46)(35,43,47,42)(36,45,37,41)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.