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