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