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)(19,23)(20,24)(21,25)(22,26)(27,30)(28,31)(29,32)(33,34)(35,42)(36,37)(38,46)(39,41)(40,48)(43,44)(45,47) involution — undirected(1,2,5,6)(3,7,9,10)(4,8,12,13)(11,14,15,16)(17,18,22,26)(19,23,20,24)(21,25,29,32)(27,30,28,31)(33,35,39,37)(34,36,41,42)(38,43,48,45)(40,44,46,47)(2,6)(4,12)(7,10)(11,15)(17,19,22,20)(18,23,26,24)(21,28,29,27)(25,31,32,30)(33,36,39,42)(34,35,41,37)(38,47,48,44)(40,45,46,43)(1,3,5,9)(2,7,6,10)(4,11,12,15)(8,14,13,16)(17,20,22,19)(18,24,26,23)(21,28,29,27)(25,31,32,30)(33,34)(35,36)(37,42)(38,40)(39,41)(43,44)(45,47)(46,48)(1,2)(3,10)(4,8)(5,6)(7,9)(11,16)(12,13)(14,15)(17,18)(19,24)(20,23)(21,25)(22,26)(27,31)(28,30)(29,32)(33,37,39,35)(34,36,41,42)(38,45,48,43)(40,44,46,47)(1,4)(2,8)(3,11)(5,12)(6,13)(7,14)(9,15)(10,16)(17,21,22,29)(18,25,26,32)(19,27,20,28)(23,30,24,31)(33,38,39,48)(34,40,41,46)(35,43,37,45)(36,44,42,47)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.