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