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