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