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