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