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