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