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