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