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