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