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