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