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