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