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