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