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